Vacuum-bottle.



P. o. E. PRIEDRIGH @E J. G. LYMAN.

VACUUM BOTTLE.

y APPLICATION FILED MAB. 5, 1908. 902.52.. Patentdnot. 27, 1908.

" :l Inventum 1 v of l I I @Wamego Philadelphia.,

PAUL O. E. FRIEDRICH, OF NEW YORK, N. Y., ND JOHN G.

SYLVANIA, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO CALORIS MANUFACf TUBING COMPANY, AJGORPORATION or DELAWARE.

VACUUM-BOTTLE.

No. soirees.v

Patented-Get. 27, 1908.

Application filed Hatch 5, 1905. Serial No. QQAH.

To alZ'wg/om it may concern: f,

Be it linownfthat We, PAUL 0. E. FRIED- ruoH, a citizen of the United States, residing inthe city, county, and State of NewYork, and JOHN G., LrMAN, a citizen of the United States, residing in the city and county of State of Pennsylvania,l have invented a new and useful Vacuum-Bottle, of which the following is a specification.

Our invention consists of a new and useful heat and cold non-conducting bottle or receptacle and consists in providing an insulation, of heat and cold non-conducting material, between -thc glass and the metal covering thereof. I l,

,f ,It yfurther',consists in providing an additional covcribg for the glass.

It further consists of other novel details of construction, all will be hereinafter fully setforth.

Figure l. represents a vertical sectional view of a heat and cold-non-conducting bottle or receptacleembodying our invention; Fig. 2 represents an enlarged sectional view of a portion of the bottle.

We have found in practice that owing to the uses to which receptacles of this character are subjected that theglass ybottles are easily broken and in addition, that it is advanta geous to provide all the heat and cold nonconducting material possible. In the drawing we, have shown a construction for overcoming thesevdefect-s and for carrying out our invention but it will be evident that the arrangements of the parts may be varied and other instruiuentalities may be employed which will come within the scope of our invention and we do not, therefore, desire to be limited to the exact construction herein shown and described but desire to make such changes as may be necessary.

l and 2 designate the two glass bottles bei tween which is provided the space 5B, the air from which is suitably exhausted forming a vacuum, said bottles being secured together provided with the usual coating of suitable silver l and 5, the former on the outer wall i ofthe inner bottle and the latter on the i inner wall of the louter bottle.

(i designates the outer covering for the bottles preferably of metal and between i which and the bottles we provide the filling or cushion '7 ot some suitable heat aud cold .tween and heat non-conducting material, such as natural wool. In this Way We provide a cushion Yfor the bottles which prevents breakage of the saine and which at the same time assists a non-conductor for heat and cold. In addition, we may provide if necessary, an insulating covering 8 to the outer glass bottle such as oxalic acid, preferably subjecting the bottles to a bath thereof, before .placing the same in the metal casing 6.

The acid Will serve to. assist as a noncon -ductor for heat and cold. If desirable, we

may provide a coatino as) for the acid consist-ing preferably oi? l vents injury to .the aci and will' further assist as a nonconductor to heat and cold.

From the above it will be seen that: we provide a receptacle Which-is 4formed oit separate receptacles having a vacuum therebeand non'insulating material applied to the outer wall of the outer receptacle, or place insulating material between the receptacles and the meta-l casing, lwhich surrounds the receptacles, the latter material serving also as acushionbetween the receptacle and the metai casing.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is:-

1. In a device of the character described,

inner and outer vessels having a vacuum therebetween, a coat of oxalic acid on the exterior ot the vessels and a casing for said vessels.

2. In a device of thecharacter described, inner and youter vessels having a` vacuum therebetween, a coat of paraffin upon the outer vessel and av casing` for said vessels.

arafin, which pre-f 3. In a device of the character described,

inner an'd outer vessels having a vacuum therebetween, oxalic acid' on the outer vessel, paraffin exterior to said oxalic acid and i a casing for said vessels.

el. In a device of the character described,

inner and outer vessels having a if'acuumv in any suitable or desired manner and being i therebetween, oXalic acid on the Iexterior of the outer vessel,c paraiiin surrminding said acid, a metallicl casing for said vessels and a cushion between said paraiin and said casing.

PAUL O. E. FRIEDRICH.

JOHN G. LYMAN.

Witnesses: i

J. C. TMcGLAsm'nv,

C. Il. McVAv. 

